您需要修改描边的墨水颜色,例如
let canvasView = PKCanvasView() // assuming we some this somewhere above
...
if !canvasView.drawing.strokes.isEmpty {
// set color whichever needed
canvasView.drawing.strokes[0].ink.color = UIColor.red // << here !!
}
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使用 Xcode 12.1 / iOS 14.1 进行测试
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